Gramophone



Oct. 16, 1923. 1,470,831

J. GREEN GRAMOPHONE Filed Nov. 24, 1920 3 Sheets-Sheet 1 J. GREEN GRAMOPHONE Oct. 16, 1923.

Filed Nov 24; 1920 3 Sheets-Sheet 2 Oct. 16,1923. 1,470,831

J. GREEN GRAMOPHONE @1121 Nov. 24. 1920 s Sheets-Sheet 3.

Patented 0st. 16, 1923.

are ATENT overea JOSHUA GREEN, OF HOVE, ENGLAND.

GBAMOPHONE.

Application filed November 24,1920. Serial No. 426,213.

To all whom it may concern:

Be it known that I, JOSHUA GREEN, a subject of the King of Great Britain, residing at 38 Rutland Gardens, Hove, Sussex, England, have invented new and useful Improvements in Gramophones, of which the following is a specification.

This invention relates to horn gIBJllD- phones of the kind which can be collapsed or dismembered to render them portable and particularly of the type wherein the stem of the horn or amplifier is detachable, and it has for its object the production of a gramo- In the accompanylng drawing which illustrates a suitable arrangement for carrying the invention into practice.

Figure 1 is a sectional side view of the improved gramophone with its parts in position for use and with the back cover removed.

Figures 2 and 3 are, respectively, a front view and a plan view thereof.

Figure 4: is a sectional side view showing the parts of the gramophone collapsed,with the back cover in position and Figures 5 and 6 are, respectively, front and rear views thereof with the cover removed.

a is the main frame of sheet-metal or other material in box form, open at the front and back ends which are designed to be closed by lids or covers 6, a when the gramophone is collapsed, as shown in Figure a, the front cover having a recess 6 hereinafter referred to. The said frame has a partition 01 adjacent to its front endwith a, circular opening 0Z therein, around the edge of which is fixed a series of radiating strips 6 (preferably overlapping) of spring sheet-metal or other elastic material, which, when bent inwards, form the mouth of the gramophone horn or amplifier, as shown in Fi ures 1, 2 a d a o he' urfaca f t e pp r part of the main frame is hinged at f an per plate or frame to the underside of which is attached a suitable motor 9 having,

by preference,'a slip-on cover 19 the said plate having an extension in the form of a bracket or tone arm support it to which'is universally jointed, say, by a ball j and socket j in the known manner, thetonearm a carrying thesound-box Z. The socket 7' is made revoluble by an extension or pin 7' Y thereon mounted in abearing in a boss 7' on the bracket h, whereby the said tone-arm can beturned on its side when the gramophone is collapsed, as shown in Figures 4t and 6. A

collar is is provided in sliding connection with the pin j the said collar having a tooth Z which is caused by aspring Z ar; ranged between the said collar and a head on the said pin y' to engage notches Z in the boss j in the in use? and collapsed positions of the said tonearm. T he upper plate is locked'to'the upperpart of the main.

frame a when extended or raised in position for use, by suitable means, suchas a springbolt m. Another plate a is hinged at n to the inner surface of the base of the frame a and forms a rearward extension of the said base, the front lid or cover I) being, advantageously slid in between the outer end of the plate a and the outer end of the extension bracket or tone arm support h, to form a strut ortie between these parts, the said outer ends being correspondingly formed or recessed as 0 18 the stem of the.

shown, to receive it trumpet or horn, whichstem is detachable and is designed to be connectedby a bayonet joint 0 (or other form of joint) to a short tube p on the bracket h, r This tube 7) is in connection with the revoluble socket j for the tone-arm, and the stem 0 when connected to the tube p holds the radiating spring strips 6 in their bent or, trumpet mouth position asshown in Figure 1. g and rare, re-

spectively, a speed.regulator and brake of; knownconstruction which arecarried upon the upper plate and project through openings g r in the top of the main framed when in position for use, as shown in Figures 1, 2 and 3.

When the gramophone is to be: collapsed to the position shown in Figure 4, the stem 0 of the horn or trumpet is first disconmeted m. he u e Mn the revblub e' socket j thus allowing the radiating spring strips 6 to assume the straight or flat form shown in Figures 4 and 5. The front cover I; is then removed from between the extension bracket: it. and. the plate: a, and theturn.- table 8, which is of known construction, is removed from the taper upper end of the driving spindle g of the motor-g and laidwithin the circular recess Z2 in the cover 6 hereinbefore referred to. The stem 0 is then placed within the box or main frame 01 in the position shown in Figure 6 and the spring bo'lt'm retracted to allow the plate. f to be lowered on its" hinge together with the tone-arm 2' into thesaid box, the. said tone-arm, at. the same time,b'eing turned on its side so that the; tooth Z is: forced" out of one notch Z? and snaps into. the other notch Z The winding key t can also be placed; within. the box a, as indicated in Figure-61 The plate 7v hinged to the base of the box or frame a is" then turned up into a vertical position, as shown in Figurev 4 so as to.- shut in the said lowered parts. The; box. ormain framed. camthenb'e engaged with. the frontcover'b containing the turntable :9, anda number of: records a.- placed' in the recess if in, the, case a behind the turned up plate n,the.back covenc being then placed in position on the back of the said born. Fi nally, a. pair. of adjustable. leather or other straps ahaving a carryinghandle w is secured aroundthe box anditscovers, as ins dica'ted in Figures 41 and 5, rendering the gramophonein its collapsed condition and withits load of records capable of being. easily carried.

In the drawing the recess 10' is shown of a capacity sufiicient for twelve records. By. sliding the cover 0 backwards, however, to a position such, for instance, as, that indicated in dottedlines Figure 4', a-greater. number ofrecords can be enclosed and supported.

The back cover 0 can serve as a holder or store for the-records when themachine is in use.

Having now particularly described and ascertained. the nature of my said invention and in what manner the sameiis to be per= formed, I" declare thatwhat I claim is 1. Ina gramophone,.the combination with the casing,- provid edwith a tone arm support, ofatone arm, a universal. joint there- 'for', comprising a member. connected with the tone arm and a member pivotally, connectedwith said tone arm'suppjort, whereby said toner arm andfthejmembers or" said universal jointl may beturned'upon said pivotal connection into operative, and inoperative positions.

-2. In a gramophone, the combination with a casing, of a tone arm. supporthinged with respect to'the casing, a tone arm,..a universal joint, comprising a member connected with.

the tone arm and a member pivotally con nected to said tone arm support, and capable of moving with the ,other member of the universal joint and the tone arm, with respect tothetone arm support, into and: out of operative position, means for temporarily securing said tone arm support in operative relation with the casing, and means for temporarily securing said pivoted member of the universal joint in operative relation with respect to said tone arm support, whereby said tone arm and its universal joint may be turned into inoperative. position with. re'- spect, to said tonev arm support and folded therewith within; the casing.

3.. In a gramophone, the combination with a casing, ofa tone arm support hinged with respect to theicasi'ng, a 7 tone 2 arm, auniversal joint comprising a member connected with the tone arm and a member pivotally connected. to said tone arm. supportandcapable of." moving, with the, other member, of. the universal joint andv the tonearm,. with. re? spect to said tone arm support into and out of. operative position,means for temporarily securing. said tone arm support in. operative relation with the. casing, means for. temporarily securingsaid pivoted member. of the. universal. joint. in. operative relation, with respect tosaid tone arm support,,and -a motor. rigidly connected to. saidtone arm support and. adapted to fold therewith within. the casing.

4;. In agramophone, the combinationvwith a casing, provided with a. vertically sup ported plate having a sound, delivery.- aperture. therein, a. plurality of silient.,materiarl havingtheir outer, ends: se-- cured to said plate around. the edgesot. said aperture and adaptedto n'ormallv lie flat? in a plane substantiallyparallel. with the plane of the plate, said stripshaving overlapping? edge portions, said casing. being provided with. a folding hinged portiorn. and. a tone arm carriedthereby, and a detachable tubu: lar. member provided-at one end withmeans tor connectingit with the tone arm-when the latter is in operative position, the, opposite end. of said tubular, member: being adapted to be detachably connectedwith andinscr-ted withinthe free ends of said. strips, whereby said-1 tubular member may,- be detached. to permit saidstrips to returnto theirilat, normal position, andtopermit the hinged part carryingthe tone arm tobe folded.

5. In agramophone, the COHlbIlIlflIiGILW-ith: a casing provided'witha vertically support-- ed plate. having asound. delivery aperture therein; a. plurality ofzstripsof resilient ma-v terialhaving.v their outer: endsxsecured :to said plate. around. the. edges otsaid aperture and adaptedto normally lieflhtinaplane substantially parallel with thev plane.- of. the

plate, said. strips having, overlapping edge.

portions, said. casing being providedi with a strips of. re-

folding hinged portion, and a tone arm carried thereby, and a detachable tubular member provided at one end with means for connecting it with the tone arm when thelatter is in operative position, the opposite end of said tubular member being adapted to be 'detachably connected with and inserted within the free ends of said strips, whereby said tubular member may be detached to permit said strips to return to their fiat, normal position, andto permit the hinged part carrying the tone arm to be folded, a detachable plate for engaging the casing and closing the sound delivery aperture when the apparatus is in folded position, and means connected with the said hinged portion of the casing for engaging the said detachable plate and supporting the tone arm when the parts are in operative position.

6. In a gramophone, the combination with a casing provided with a vertically supported plate having a sound delivery aperture therein, a plurality of strips of resilient material having their outer ends secured to said plate around the edges of said aperture, and adapted to normally lie flat in a plane substantially parallel with the plane of the plate, said strips having overlapping edge portions, said casing being provided with a folding hinged por tion, and a tone arm carried thereby, and a detachable tubular member provided at one end with means for connecting it with the tone arm when the latter is in operative posit-ion, the opposite end of said tubular member being adapted to be detachably connected with and inserted within the free ends of said strips, whereby said tubular member may be detached to permit said strips to return to their flat, normal position, and to permit the hinged part carrying the tone arm to be folded, said casing having a folding member hinged to the bottom thereof and adapted to form an extension of the bottom of the casing, a detachable plate adapted to engage the casing and close the sound delivery aperture when the apparatus is in folded position, said folding member and said hinged member being provided with means for engaging said detachable plate to hold the hinged member and tone arm in operative position, said detachable plate being provided with a circular recess for receiving the turn table of the machine and holding it between it and the plate containing the sound delivery aperture.

7 In a gramophone, the combination with a casing, a hinged part secured to the casing and adapted to project therefrom in substantial alignment with a wall of the casing and forming a continuation thereof when in operative position, amotor secured to and carried by the said hinged part, a removable turntable therefor, a tone arm connected to the hinged part, and capable of folding with respect thereto, and also of folding therewith into the casing, a demountable horn member detachably connected with the tone arm, and means for supporting said hinged part in operative position.

8. In a gramophone, the combination with a casing, of a hinged part adapted to be folded with the casing, and to be projected outside of the casing, and means for supporting said hinged part in projected position, a motor secured to said hinged part and adapted to fold therewith into said casing, a tone arm, a universal joint for said tone arm comprising a member connected with the tone arm, and a member having a pivotal connection with the said hinged part, the axis of said pivotal connection extending longitudinally of said hinged part, means for detachably securing said pivoted member of the universal joint .in position to hold the tone arm in operative position, whereby said tone arm and the members of the universal joint may be folded laterally with respect to said hinged part and folded therewith within the cas- 'ing when not in use.

9. In a gramophone, the combination with a casing, of a hinged tone arm support adapted to be folded within the casing, and to be projected outside of the casing, and means for supporting said hinged part in projected position, a motor secured to said hinged part and adapted to fold therewith into the casing, a tone arm, a universal joint for said tone arm comprising two members one of which is connected with the tone arm, a pivot pin connecting the other member of the universal joint to the said hinged tone arm support, and a spring actuated locking collar on said pivot pin for engaging a part connected with the tone arm support to detachably secure the universal joint and tone arm in operative position whereby said tone arm and universal joint members can be folded on said pivot pin with respect to the said hinged tone arm support and folded therewith within said casing.

10. In a gramophone, the combination with a casing having its rear end open and provided with a hinged closing plate forming an extension of the lower side of the casing when in open position, a hinged tone arm support secured to the upper side of the casing and adapted to fold within the casing, and to form an extension of the upper side when in open position, a motor secured to the hinged tone arm support, a tone arm, a universal joint comprising two members, one'of which is connected to the tone arm, and the other of which is pivotally secured to said hinged tone arm support, means for detachably securing said cover being adapted to engage the hinged closing plate and said hinged tone arm support to hold the latter, and the tone arm 10 and motor in operative position when not in use.

JOSHUA GREEN. 

